The San Jose City Council voted Tuesday to expand an investigation into potential favoritism in the city's decision to purchase $8 million in Cisco networking and phone equipment for its new downtown City Hall. Under the council's order, City Attorney Rick Doyle and City Auditor Gerald Silva will join forces to examine whether the city's early dealings with Cisco improperly put the San Jose networking giant in the position of advising the city on how much Cisco equipment to buy. Cisco's role in consulting with the city was first reported last week by the Mercury News. Since then, at least...